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soundcard.h

#ifndef SOUNDCARD_H
#define SOUNDCARD_H
/*
 * Copyright by Hannu Savolainen 1993-2000
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer. 2.
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * IMPORTANT NOTICE!
 *
 * This header file contains many obsolete definitions (for compatibility
 * purposes). Please check the OSS Programmer's guide for descriptions
 * of the supported API details (http://www.opensound.com/pguide).
 */

#if defined(__cplusplus)
#define EXTERNC extern "C"
#else
#define EXTERNC extern
#endif                          /* EXTERN_C_WRAPPERS */

/*
 * OSS interface version. With versions earlier than 3.6 this value is
 * an integer with value less than 361. In versions 3.6 and later
 * it's a six digit hexadecimal value. For example value
 * of 0x030600 represents OSS version 3.6.0.
 * Use ioctl(fd, OSS_GETVERSION, &int) to get the version number of
 * the currently active driver.
 */
#define SOUND_VERSION   0x030960
#define OPEN_SOUND_SYSTEM

#if defined(__hpux) && !defined(_HPUX_SOURCE)
#     error "-D_HPUX_SOURCE must be used when compiling OSS applications"
#endif

#ifdef __hpux
#include <sys/ioctl.h>
#endif

#ifdef linux
/* In Linux we need to be prepared for cross compiling */
#include <linux/ioctl.h>
#else
# ifdef __FreeBSD__
#    include <sys/ioccom.h>
# else
#    include <sys/ioctl.h>
# endif
#endif

/*
 *    Supported card ID numbers (OBSOLETE. NOT USED ANY MORE)
 */

#define SNDCARD_ADLIB         1
#define SNDCARD_SB            2
#define SNDCARD_PAS           3
#define SNDCARD_GUS           4
#define SNDCARD_MPU401        5
#define SNDCARD_SB16          6
#define SNDCARD_SB16MIDI      7
#define SNDCARD_UART6850      8
#define SNDCARD_GUS16         9
#define SNDCARD_MSS           10
#define SNDCARD_PSS           11
#define SNDCARD_SSCAPE        12
#define SNDCARD_PSS_MPU       13
#define SNDCARD_PSS_MSS       14
#define SNDCARD_SSCAPE_MSS    15
#define SNDCARD_TRXPRO        16
#define SNDCARD_TRXPRO_SB     17
#define SNDCARD_TRXPRO_MPU    18
#define SNDCARD_MAD16         19
#define SNDCARD_MAD16_MPU     20
#define SNDCARD_CS4232        21
#define SNDCARD_CS4232_MPU    22
#define SNDCARD_MAUI          23
#define SNDCARD_PSEUDO_MSS    24
#define SNDCARD_GUSPNP        25
#define SNDCARD_UART401       26
/* Sound card numbers 27 to N are reserved. Don't add more numbers here */

/***********************************
 * IOCTL Commands for /dev/sequencer
 */

#ifndef __SIOWR
#if defined(__hpux) || (defined(_IOWR) && (defined(_AIX) || (!defined(sun) && !defined(sparc) && !defined(__INCioctlh) && !defined(__Lynx__))))
/* Use already defined ioctl defines if they exist (except with Sun and some others) */
#define     SIOCPARM_MASK     IOCPARM_MASK
#define     SIOC_VOID   IOC_VOID
#define     SIOC_OUT    IOC_OUT
#define     SIOC_IN           IOC_IN
#define     SIOC_INOUT  IOC_INOUT
#define __SIOC_SIZE     _IOC_SIZE
#define __SIOC_DIR      _IOC_DIR
#define __SIOC_NONE     _IOC_NONE
#define __SIOC_READ     _IOC_READ
#define __SIOC_WRITE    _IOC_WRITE
#define     __SIO       _IO
#define     __SIOR            _IOR
#define     __SIOW            _IOW
#define     __SIOWR           _IOWR
#else

/* Ioctl's have the command encoded in the lower word,
 * and the size of any in or out parameters in the upper
 * word.  The high 2 bits of the upper word are used
 * to encode the in/out status of the parameter; for now
 * we restrict parameters to at most 8191 bytes.
 */
/* #define  SIOCTYPE          (0xff<<8) */
#define     SIOCPARM_MASK     0x1fff  /* parameters must be < 8192 bytes */
#define     SIOC_VOID   0x00000000      /* no parameters */
#define     SIOC_OUT    0x20000000      /* copy out parameters */
#define     SIOC_IN           0x40000000      /* copy in parameters */
#define     SIOC_INOUT  (SIOC_IN|SIOC_OUT)
/* the 0x20000000 is so we can distinguish new ioctl's from old */
#define     __SIO(x,y)  ((int)(SIOC_VOID|(x<<8)|y))
#define     __SIOR(x,y,t)     ((int)(SIOC_OUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
#define     __SIOW(x,y,t)     ((int)(SIOC_IN|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
#define     __SIOWR(x,y,t)    ((int)(SIOC_INOUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
#define __SIOC_SIZE(x)  ((x>>16)&SIOCPARM_MASK)
#define __SIOC_DIR(x)   (x & 0xf0000000)
#define __SIOC_NONE     SIOC_VOID
#define __SIOC_READ     SIOC_OUT
#define __SIOC_WRITE    SIOC_IN
#  endif                        /* _IOWR */
#endif                          /* !__SIOWR */

#define SNDCTL_SEQ_RESET            __SIO  ('Q', 0)
#define SNDCTL_SEQ_SYNC             __SIO  ('Q', 1)
#define SNDCTL_SYNTH_INFO           __SIOWR('Q', 2, struct synth_info)
#define SNDCTL_SEQ_CTRLRATE         __SIOWR('Q', 3, int)    /* Set/get timer resolution (HZ) */
#define SNDCTL_SEQ_GETOUTCOUNT            __SIOR ('Q', 4, int)
#define SNDCTL_SEQ_GETINCOUNT       __SIOR ('Q', 5, int)
#define SNDCTL_SEQ_PERCMODE         __SIOW ('Q', 6, int)
#define SNDCTL_FM_LOAD_INSTR        __SIOW ('Q', 7, struct sbi_instrument)  /* Obsolete. Don't use!!!!!! */
#define SNDCTL_SEQ_TESTMIDI         __SIOW ('Q', 8, int)
#define SNDCTL_SEQ_RESETSAMPLES           __SIOW ('Q', 9, int)
#define SNDCTL_SEQ_NRSYNTHS         __SIOR ('Q',10, int)
#define SNDCTL_SEQ_NRMIDIS          __SIOR ('Q',11, int)
#define SNDCTL_MIDI_INFO            __SIOWR('Q',12, struct midi_info)
#define SNDCTL_SEQ_THRESHOLD        __SIOW ('Q',13, int)
#define SNDCTL_SYNTH_MEMAVL         __SIOWR('Q',14, int)    /* in=dev#, out=memsize */
#define SNDCTL_FM_4OP_ENABLE        __SIOW ('Q',15, int)    /* in=dev# */
#define SNDCTL_SEQ_PANIC            __SIO  ('Q',17)
#define SNDCTL_SEQ_OUTOFBAND        __SIOW ('Q',18, struct seq_event_rec)
#define SNDCTL_SEQ_GETTIME          __SIOR ('Q',19, int)
#define SNDCTL_SYNTH_ID             __SIOWR('Q',20, struct synth_info)
#define SNDCTL_SYNTH_CONTROL        __SIOWR('Q',21, struct synth_control)
#define SNDCTL_SYNTH_REMOVESAMPLE   __SIOWR('Q',22, struct remove_sample)   /* Reserved for future use */
#define SNDCTL_SEQ_TIMING_ENABLE    __SIO  ('Q', 23)        /* Enable incoming MIDI timing messages */
#define SNDCTL_SEQ_ACTSENSE_ENABLE  __SIO  ('Q', 24)        /* Enable incoming active sensing messages */
#define SNDCTL_SEQ_RT_ENABLE        __SIO  ('Q', 25)        /* Enable other incoming realtime messages */

typedef struct synth_control {
    int devno;                  /* Synthesizer # */
    char data[4000];            /* Device spesific command/data record */
} synth_control;

typedef struct remove_sample {
    int devno;                  /* Synthesizer # */
    int bankno;                 /* MIDI bank # (0=General MIDI) */
    int instrno;                /* MIDI instrument number */
} remove_sample;

typedef struct seq_event_rec {
    unsigned char arr[8];
} seq_event_rec;

#define SNDCTL_TMR_TIMEBASE         __SIOWR('T', 1, int)
#define SNDCTL_TMR_START            __SIO  ('T', 2)
#define SNDCTL_TMR_STOP             __SIO  ('T', 3)
#define SNDCTL_TMR_CONTINUE         __SIO  ('T', 4)
#define SNDCTL_TMR_TEMPO            __SIOWR('T', 5, int)
#define SNDCTL_TMR_SOURCE           __SIOWR('T', 6, int)
#     define TMR_INTERNAL           0x00000001
#     define TMR_EXTERNAL           0x00000002
#           define TMR_MODE_MIDI    0x00000010
#           define TMR_MODE_FSK     0x00000020
#           define TMR_MODE_CLS     0x00000040
#           define TMR_MODE_SMPTE   0x00000080
#define SNDCTL_TMR_METRONOME        __SIOW ('T', 7, int)
#define SNDCTL_TMR_SELECT           __SIOW ('T', 8, int)

/*
 * Some big endian/little endian handling macros (native endian and opposite
 * endian formats)
 */

#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__hppa) || defined(PPC) || defined(__powerpc__) && !defined(i386) && !defined(__i386) && !defined(__i386__)
/* Big endian machines */
#  define _PATCHKEY(id) (0xfd00|id)
#  define AFMT_S16_NE AFMT_S16_BE
#  define AFMT_U16_NE AFMT_U16_BE
#  define AFMT_S32_NE AFMT_S32_BE
#  define AFMT_S24_NE AFMT_S24_BE
#  define AFMT_S16_OE AFMT_S16_LE
#  define AFMT_S32_OE AFMT_S32_LE
#  define AFMT_S24_OE AFMT_S24_LE
#else
#  define _PATCHKEY(id) ((id<<8)|0xfd)
#  define AFMT_S16_NE AFMT_S16_LE
#  define AFMT_U16_NE AFMT_U16_LE
#  define AFMT_S32_NE AFMT_S32_LE
#  define AFMT_S24_NE AFMT_S24_LE
#  define AFMT_S16_OE AFMT_S16_BE
#  define AFMT_S32_OE AFMT_S32_BE
#  define AFMT_S24_OE AFMT_S24_BE
#endif

/*
 *    Sample loading mechanism for internal synthesizers (/dev/sequencer)
 *    The following patch_info structure has been designed to support
 *    Gravis UltraSound. It tries to be universal format for uploading
 *    sample based patches but is probably too limited.
 */

struct patch_info {
    unsigned short key;         /* Use WAVE_PATCH here */
#define WAVE_PATCH      _PATCHKEY(0x04)
#define GUS_PATCH WAVE_PATCH
#define WAVEFRONT_PATCH    _PATCHKEY(0x06)

    short device_no;            /* Synthesizer number */
    short instr_no;             /* Midi pgm# */

    unsigned int mode;
/*
 * The least significant byte has the same format than the GUS .PAT
 * files
 */
#define WAVE_16_BITS    0x01    /* bit 0 = 8 or 16 bit wave data. */
#define WAVE_UNSIGNED   0x02    /* bit 1 = Signed - Unsigned data. */
#define WAVE_LOOPING    0x04    /* bit 2 = looping enabled-1. */
#define WAVE_BIDIR_LOOP 0x08    /* bit 3 = Set is bidirectional looping. */
#define WAVE_LOOP_BACK  0x10    /* bit 4 = Set is looping backward. */
#define WAVE_SUSTAIN_ON 0x20    /* bit 5 = Turn sustaining on. (Env. pts. 3) */
#define WAVE_ENVELOPES  0x40    /* bit 6 = Enable envelopes - 1 */
#define WAVE_FAST_RELEASE 0x80  /* bit 7 = Shut off immediately after note off */
    /*  (use the env_rate/env_offs fields). */
/* Linux specific bits */
#define WAVE_VIBRATO    0x00010000      /* The vibrato info is valid */
#define WAVE_TREMOLO    0x00020000      /* The tremolo info is valid */
#define WAVE_SCALE      0x00040000      /* The scaling info is valid */
#define WAVE_FRACTIONS  0x00080000      /* Fraction information is valid */
/* Reserved bits */
#define WAVE_ROM  0x40000000      /* For future use */
#define WAVE_MULAW      0x20000000      /* For future use */
/* Other bits must be zeroed */

    int len;                    /* Size of the wave data in bytes */
    int loop_start, loop_end;   /* Byte offsets from the beginning */

/* 
 * The base_freq and base_note fields are used when computing the
 * playback speed for a note. The base_note defines the tone frequency
 * which is heard if the sample is played using the base_freq as the
 * playback speed.
 *
 * The low_note and high_note fields define the minimum and maximum note
 * frequencies for which this sample is valid. It is possible to define
 * more than one samples for an instrument number at the same time. The
 * low_note and high_note fields are used to select the most suitable one.
 *
 * The fields base_note, high_note and low_note should contain
 * the note frequency multiplied by 1000. For example value for the
 * middle A is 440*1000.
 */

    unsigned int base_freq;
    unsigned int base_note;
    unsigned int high_note;
    unsigned int low_note;
    int panning;                /* -128=left, 127=right */
    int detuning;

/*    New fields introduced in version 1.99.5   */

    /* Envelope. Enabled by mode bit WAVE_ENVELOPES  */
    unsigned char env_rate[6];  /* GUS HW ramping rate */
    unsigned char env_offset[6];        /* 255 == 100% */

    /* 
     * The tremolo, vibrato and scale info are not supported yet.
     * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
     * WAVE_SCALE
     */

    unsigned char tremolo_sweep;
    unsigned char tremolo_rate;
    unsigned char tremolo_depth;

    unsigned char vibrato_sweep;
    unsigned char vibrato_rate;
    unsigned char vibrato_depth;

    int scale_frequency;
    unsigned int scale_factor;  /* from 0 to 2048 or 0 to 2 */

    int volume;
    int fractions;
    int reserved1;
    int spare[2];
    char data[1];               /* The waveform data starts here */
};

struct sysex_info {
    short key;                  /* Use SYSEX_PATCH or MAUI_PATCH here */
#define SYSEX_PATCH     _PATCHKEY(0x05)
#define MAUI_PATCH      _PATCHKEY(0x06)
    short device_no;            /* Synthesizer number */
    int len;                    /* Size of the sysex data in bytes */
    unsigned char data[1];      /* Sysex data starts here */
};

/*
 * /dev/sequencer input events.
 *
 * The data written to the /dev/sequencer is a stream of events. Events
 * are records of 4 or 8 bytes. The first byte defines the size. 
 * Any number of events can be written with a write call. There
 * is a set of macros for sending these events. Use these macros if you
 * want to maximize portability of your program.
 *
 * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
 * (All input events are currently 4 bytes long. Be prepared to support
 * 8 byte events also. If you receive any event having first byte >= 128,
 * it's a 8 byte event.
 *
 * The events are documented at the end of this file.
 *
 * Normal events (4 bytes)
 * There is also a 8 byte version of most of the 4 byte events. The
 * 8 byte one is recommended.
 *
 * NOTE! All 4 byte events are now obsolete. Applications should not write
 *       them. However 4 byte events are still used as inputs from
 *       /dev/sequencer (/dev/music uses only 8 byte ones).
 */
#define SEQ_NOTEOFF           0
#define SEQ_FMNOTEOFF         SEQ_NOTEOFF     /* Just old name */
#define SEQ_NOTEON            1
#define     SEQ_FMNOTEON            SEQ_NOTEON
#define SEQ_WAIT        TMR_WAIT_ABS
#define SEQ_PGMCHANGE         3
#define SEQ_FMPGMCHANGE       SEQ_PGMCHANGE
#define SEQ_SYNCTIMER         TMR_START
#define SEQ_MIDIPUTC          5
#define SEQ_DRUMON            6       /*** OBSOLETE ***/
#define SEQ_DRUMOFF           7       /*** OBSOLETE ***/
#define SEQ_ECHO        TMR_ECHO        /* For synching programs with output */
#define SEQ_AFTERTOUCH        9
#define SEQ_CONTROLLER        10

/*******************************************
 *    Midi controller numbers
 *******************************************
 * Controllers 0 to 31 (0x00 to 0x1f) and
 * 32 to 63 (0x20 to 0x3f) are continuous
 * controllers.
 * In the MIDI 1.0 these controllers are sent using
 * two messages. Controller numbers 0 to 31 are used
 * to send the MSB and the controller numbers 32 to 63
 * are for the LSB. Note that just 7 bits are used in MIDI bytes.
 */

#define        CTL_BANK_SELECT            0x00
#define        CTL_MODWHEEL               0x01
#define    CTL_BREATH               0x02
/*          undefined         0x03 */
#define    CTL_FOOT                 0x04
#define    CTL_PORTAMENTO_TIME            0x05
#define    CTL_DATA_ENTRY           0x06
#define    CTL_MAIN_VOLUME          0x07
#define    CTL_BALANCE              0x08
/*          undefined         0x09 */
#define    CTL_PAN                  0x0a
#define    CTL_EXPRESSION           0x0b
/*          undefined         0x0c */
/*          undefined         0x0d */
/*          undefined         0x0e */
/*          undefined         0x0f */
#define    CTL_GENERAL_PURPOSE1     0x10
#define    CTL_GENERAL_PURPOSE2     0x11
#define    CTL_GENERAL_PURPOSE3     0x12
#define    CTL_GENERAL_PURPOSE4     0x13
/*          undefined         0x14 - 0x1f */

/*          undefined         0x20 */
/* The controller numbers 0x21 to 0x3f are reserved for the */
/* least significant bytes of the controllers 0x00 to 0x1f. */
/* These controllers are not recognised by the driver. */

/* Controllers 64 to 69 (0x40 to 0x45) are on/off switches. */
/* 0=OFF and 127=ON (intermediate values are possible) */
#define    CTL_DAMPER_PEDAL         0x40
#define    CTL_SUSTAIN              0x40    /* Alias */
#define    CTL_HOLD                 0x40    /* Alias */
#define    CTL_PORTAMENTO           0x41
#define    CTL_SOSTENUTO            0x42
#define    CTL_SOFT_PEDAL           0x43
/*          undefined         0x44 */
#define    CTL_HOLD2                0x45
/*          undefined         0x46 - 0x4f */

#define    CTL_GENERAL_PURPOSE5     0x50
#define    CTL_GENERAL_PURPOSE6     0x51
#define    CTL_GENERAL_PURPOSE7     0x52
#define    CTL_GENERAL_PURPOSE8     0x53
/*          undefined         0x54 - 0x5a */
#define    CTL_EXT_EFF_DEPTH        0x5b
#define    CTL_TREMOLO_DEPTH        0x5c
#define    CTL_CHORUS_DEPTH         0x5d
#define    CTL_DETUNE_DEPTH         0x5e
#define    CTL_CELESTE_DEPTH        0x5e    /* Alias for the above one */
#define    CTL_PHASER_DEPTH         0x5f
#define    CTL_DATA_INCREMENT       0x60
#define    CTL_DATA_DECREMENT       0x61
#define    CTL_NONREG_PARM_NUM_LSB  0x62
#define    CTL_NONREG_PARM_NUM_MSB  0x63
#define    CTL_REGIST_PARM_NUM_LSB  0x64
#define    CTL_REGIST_PARM_NUM_MSB  0x65
/*          undefined         0x66 - 0x78 */
/*          reserved          0x79 - 0x7f */

/* Pseudo controllers (not midi compatible) */
#define    CTRL_PITCH_BENDER        255
#define    CTRL_PITCH_BENDER_RANGE  254
#define    CTRL_EXPRESSION          253     /* Obsolete */
#define    CTRL_MAIN_VOLUME         252     /* Obsolete */
#define SEQ_BALANCE           11
#define SEQ_VOLMODE             12

/*
 * Volume mode defines how volumes are used
 */

#define VOL_METHOD_ADAGIO     1
#define VOL_METHOD_LINEAR     2

/*
 * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
 *     input events.
 */

/*
 * Event codes 0xf0 to 0xfc are reserved for future extensions.
 */

#define SEQ_FULLSIZE          0xfd    /* Long events */
/*
 *    SEQ_FULLSIZE events are used for loading patches/samples to the
 *    synthesizer devices. These events are passed directly to the driver
 *    of the associated synthesizer device. There is no limit to the size
 *    of the extended events. These events are not queued but executed
 *    immediately when the write() is called (execution can take several
 *    seconds of time). 
 *
 *    When a SEQ_FULLSIZE message is written to the device, it must
 *    be written using exactly one write() call. Other events cannot
 *    be mixed to the same write.
 *    
 *    For FM synths (YM3812/OPL3) use struct sbi_instrument and write it to the 
 *    /dev/sequencer. Don't write other data together with the instrument structure
 *    Set the key field of the structure to FM_PATCH. The device field is used to
 *    route the patch to the corresponding device.
 *
 *    For wave table use struct patch_info. Initialize the key field
 *      to WAVE_PATCH.
 */
#define SEQ_PRIVATE           0xfe    /* Low level HW dependent events (8 bytes) */
#define SEQ_EXTENDED          0xff    /* Extended events (8 bytes) OBSOLETE */

/*
 * Record for FM patches
 */

typedef unsigned char sbi_instr_data[32];

struct sbi_instrument {
    unsigned short key;         /* FM_PATCH or OPL3_PATCH */
#define FM_PATCH  _PATCHKEY(0x01)
#define OPL3_PATCH      _PATCHKEY(0x03)
    short device;               /*  Synth# (0-4)    */
    int channel;                /*  Program# to be initialized  */
    sbi_instr_data operators;   /*  Register settings for operator cells (.SBI format)  */
};

struct synth_info {             /* Read only */
    char name[30];
    int device;                 /* 0-N. INITIALIZE BEFORE CALLING */
    int synth_type;
#define SYNTH_TYPE_FM               0
#define SYNTH_TYPE_SAMPLE           1
#define SYNTH_TYPE_MIDI             2       /* Midi interface */

    int synth_subtype;
#define FM_TYPE_ADLIB               0x00
#define FM_TYPE_OPL3                0x01
#define MIDI_TYPE_MPU401            0x401

#define SAMPLE_TYPE_BASIC           0x10
#define SAMPLE_TYPE_GUS             SAMPLE_TYPE_BASIC
#define SAMPLE_TYPE_WAVEFRONT   0x11

    int perc_mode;              /* No longer supported */
    int nr_voices;
    int nr_drums;               /* Obsolete field */
    int instr_bank_size;
    unsigned int capabilities;
#define SYNTH_CAP_PERCMODE          0x00000001      /* No longer used */
#define SYNTH_CAP_OPL3              0x00000002      /* Set if OPL3 supported */
#define SYNTH_CAP_INPUT             0x00000004      /* Input (MIDI) device */
    int dummies[19];            /* Reserve space */
};

struct sound_timer_info {
    char name[32];
    int caps;
};

#define MIDI_CAP_MPU401       1       /* MPU-401 intelligent mode */

struct midi_info {
    char name[30];
    int device;                 /* 0-N. INITIALIZE BEFORE CALLING */
    unsigned int capabilities;  /* To be defined later */
    int dev_type;
    int dummies[18];            /* Reserve space */
};

/********************************************
 * ioctl commands for the /dev/midi##
 */
typedef struct {
    unsigned char cmd;
    char nr_args, nr_returns;
    unsigned char data[30];
} mpu_command_rec;

#define SNDCTL_MIDI_PRETIME         __SIOWR('m', 0, int)
#define SNDCTL_MIDI_MPUMODE         __SIOWR('m', 1, int)
#define SNDCTL_MIDI_MPUCMD          __SIOWR('m', 2, mpu_command_rec)

/********************************************
 * IOCTL commands for /dev/dsp and /dev/audio
 */

#define SNDCTL_DSP_RESET            __SIO  ('P', 0)
#define SNDCTL_DSP_SYNC             __SIO  ('P', 1)
#define SNDCTL_DSP_SPEED            __SIOWR('P', 2, int)
#define SNDCTL_DSP_STEREO           __SIOWR('P', 3, int)
#define SNDCTL_DSP_GETBLKSIZE       __SIOWR('P', 4, int)
#define SNDCTL_DSP_SAMPLESIZE       SNDCTL_DSP_SETFMT
#define SNDCTL_DSP_CHANNELS         __SIOWR('P', 6, int)
#define SOUND_PCM_WRITE_CHANNELS    SNDCTL_DSP_CHANNELS
#define SOUND_PCM_WRITE_FILTER            __SIOWR('P', 7, int)
#define SNDCTL_DSP_POST             __SIO  ('P', 8)
#define SNDCTL_DSP_SUBDIVIDE        __SIOWR('P', 9, int)
#define SNDCTL_DSP_SETFRAGMENT            __SIOWR('P',10, int)

/*    Audio data formats (Note! U8=8 and S16_LE=16 for compatibility) */
#define SNDCTL_DSP_GETFMTS          __SIOR ('P',11, int)    /* Returns a mask */
#define SNDCTL_DSP_SETFMT           __SIOWR('P',5, int)     /* Selects ONE fmt */
#     define AFMT_QUERY       0x00000000      /* Return current fmt */
#     define AFMT_MU_LAW            0x00000001
#     define AFMT_A_LAW       0x00000002
#     define AFMT_IMA_ADPCM   0x00000004
#     define AFMT_U8                0x00000008
#     define AFMT_S16_LE            0x00000010      /* Little endian signed 16 */
#     define AFMT_S16_BE            0x00000020      /* Big endian signed 16 */
#     define AFMT_S8                0x00000040
#     define AFMT_U16_LE            0x00000080      /* Little endian U16 */
#     define AFMT_U16_BE            0x00000100      /* Big endian U16 */
#     define AFMT_MPEG        0x00000200      /* MPEG (2) audio */

/* AC3 _compressed_ bitstreams (See Programmer's Guide for details). */
#     define AFMT_AC3               0x00000400
/* Ogg Vorbis _compressed_ bit streams */
#     define AFMT_VORBIS            0x00000800

/* 32 bit formats (MSB aligned) formats */
#     define AFMT_S32_LE            0x00001000
#     define AFMT_S32_BE            0x00002000

/* Reserved for _native_ endian double precision IEEE floating point */
#     define AFMT_FLOAT       0x00004000

/* 24 bit formats (LSB aligned in 32 bit word) formats */
#     define AFMT_S24_LE            0x00008000
#     define AFMT_S24_BE            0x00010000

/*
 * S/PDIF raw format. In this format the S/PDIF frames (including all
 * control and user bits) are included in the data stream. Each sample
 * is stored in a 32 bit frame (see IEC-958 for more info). This format
 * is supported by very few devices and it's only usable for purposes
 * where full access to the control/user bits is required (real time control).
 */
#     define AFMT_SPDIF_RAW   0x00020000

/*
 * Buffer status queries.
 */
typedef struct audio_buf_info {
    int fragments;              /* # of available fragments (partially usend ones not counted) */
    int fragstotal;             /* Total # of fragments allocated */
    int fragsize;               /* Size of a fragment in bytes */

    int bytes;                  /* Available space in bytes (includes partially used fragments) */
    /* Note! 'bytes' could be more than fragments*fragsize */
} audio_buf_info;

#define SNDCTL_DSP_GETOSPACE        __SIOR ('P',12, audio_buf_info)
#define SNDCTL_DSP_GETISPACE        __SIOR ('P',13, audio_buf_info)
#define SNDCTL_DSP_NONBLOCK         __SIO  ('P',14) /* Obsolete. Not supported */
#define SNDCTL_DSP_GETCAPS          __SIOR ('P',15, int)
#     define DSP_CAP_REVISION       0x000000ff      /* Bits for revision level (0 to 255) */
#     define DSP_CAP_DUPLEX         0x00000100      /* Full duplex record/playback */
#     define DSP_CAP_REALTIME       0x00000200      /* Not in use */
#     define DSP_CAP_BATCH          0x00000400      /* Device has some kind of */
                                                        /* internal buffers which may */
                                                        /* cause some delays and */
                                                        /* decrease precision of timing */
#     define DSP_CAP_COPROC         0x00000800      /* Has a coprocessor */
                                                        /* Sometimes it's a DSP */
                                                        /* but usually not */
#     define DSP_CAP_TRIGGER        0x00001000      /* Supports SETTRIGGER */
#     define DSP_CAP_MMAP           0x00002000      /* Supports mmap() */
#   define DSP_CAP_MULTI      0x00004000      /* Supports multiple open */
#   define DSP_CAP_BIND       0x00008000      /* Supports binding to front/rear/center/lfe */
#   define DSP_CAP_INPUT      0x00010000      /* Supports recording */
#   define DSP_CAP_OUTPUT     0x00020000      /* Supports playback */
#define DSP_CAP_VIRTUAL       0x00040000      /* Virtuial device */
/* 0x00040000 and 0x00080000 reserved for future use */

/* Analog/digital control capabilities */
#     define DSP_CAP_ANALOGOUT      0x00100000
#     define DSP_CAP_ANALOGIN       0x00200000
#     define DSP_CAP_DIGITALOUT     0x00400000
#     define DSP_CAP_DIGITALIN      0x00800000
#     define DSP_CAP_ADMASK         0x00f00000
/*
 * NOTE! (capabilities & DSP_CAP_ADMASK)==0 means just that the
 * digital/analog interface control features are not supported by the 
 * device/driver. However the device still supports analog, digital or
 * both inputs/outputs (depending on the device). See the OSS Programmer's
 * Guide for full details.
 */
#     define DSP_CAP_SHADOW         0x01000000      /* "Shadow" device */


/*
 * Preferred channel usage. These bits can be used to
 * give recommendations to the application. Used by few drivers.
 * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
 * the device works best in mono mode. However it doesn't necessarily mean
 * that the device cannot be used in stereo. These bits should only be used
 * special applications such as multi track hard disk recorders to find out
 * the initial setup. However the user should be able to override this
 * selection.
 *
 * To find out which modes are actually supported the application should 
 * try to select them using SNDCTL_DSP_CHANNELS.
 */
#     define DSP_CH_MASK                  0x06000000      /* Mask */
#     define DSP_CH_ANY             0x00000000      /* No preferred mode */
#     define DSP_CH_MONO                  0x02000000
#     define DSP_CH_STEREO          0x04000000
#     define DSP_CH_MULTI                 0x06000000      /* More than two channels */

#     define DSP_CAP_SLAVE          0x08000000      /* "Slave" device */

#define SNDCTL_DSP_GETTRIGGER       __SIOR ('P',16, int)
#define SNDCTL_DSP_SETTRIGGER       __SIOW ('P',16, int)
#     define PCM_ENABLE_INPUT       0x00000001
#     define PCM_ENABLE_OUTPUT      0x00000002

typedef struct count_info {
    int bytes;                  /* Total # of bytes processed */
    int blocks;                 /* # of fragment transitions since last time */
    int ptr;                    /* Current DMA pointer value */
} count_info;

#define SNDCTL_DSP_GETIPTR          __SIOR ('P',17, count_info)
#define SNDCTL_DSP_GETOPTR          __SIOR ('P',18, count_info)

typedef struct buffmem_desc {
    unsigned *buffer;
    int size;
} buffmem_desc;
#define SNDCTL_DSP_MAPINBUF         __SIOR ('P', 19, buffmem_desc)
#define SNDCTL_DSP_MAPOUTBUF        __SIOR ('P', 20, buffmem_desc)
#define SNDCTL_DSP_SETSYNCRO        __SIO  ('P', 21)
#define SNDCTL_DSP_SETDUPLEX        __SIO  ('P', 22)

/*
 * Application's profile defines the way how playback underrun situations should be handled.
 * 
 *    APF_NORMAL (the default) and APF_NETWORK make the driver to cleanup the
 *    playback buffer whenever an underrun occurs. This consumes some time
 *    prevents looping the existing buffer.
 *    APF_CPUINTENS is intended to be set by CPU intensive applications which
 *    are likely to run out of time occasionally. In this mode the buffer cleanup is
 *    disabled which saves CPU time but also let's the previous buffer content to
 *    be played during the "pause" after the underrun.
 */
#define SNDCTL_DSP_PROFILE          __SIOW ('P', 23, int)
#define       APF_NORMAL      0       /* Normal applications */
#define       APF_NETWORK     1       /* Underruns probably caused by an "external" delay */
#define   APF_CPUINTENS 2       /* Underruns probably caused by "overheating" the CPU */

#define SNDCTL_DSP_GETODELAY        __SIOR ('P', 23, int)
#define SNDCTL_DSP_GETOUTVOL        __SIOR ('P', 24, int)
#define SNDCTL_DSP_SETOUTVOL        __SIOWR('P', 24, int)

typedef struct audio_errinfo {
    int play_underruns;
    int rec_overruns;
    unsigned int play_ptradjust;
    unsigned int rec_ptradjust;
    int play_errorcount;
    int rec_errorcount;
    int play_lasterror;
    int rec_lasterror;
    long play_errorparm;
    long rec_errorparm;
    int filler[16];
} audio_errinfo;

#define SNDCTL_DSP_GETERROR         __SIOR ('P', 25, audio_errinfo)

typedef struct oss_digital_control {
    unsigned int caps;
#define DIG_CBITIN_NONE                   0x00000000
#define DIG_CBITIN_LIMITED                0x00000001
#define DIG_CBITIN_DATA                   0x00000002
#define DIG_CBITIN_BYTE0                  0x00000004
#define DIG_CBITIN_FULL                   0x00000008
#define DIG_CBITIN_MASK                   0x0000000f
#define DIG_CBITOUT_NONE                  0x00000000
#define DIG_CBITOUT_LIMITED               0x00000010
#define DIG_CBITOUT_BYTE0                 0x00000020
#define DIG_CBITOUT_FULL                  0x00000040
#define DIG_CBITOUT_DATA                  0x00000080
#define DIG_CBITOUT_MASK                  0x000000f0
#define DIG_UBITIN                        0x00000100
#define DIG_UBITOUT                       0x00000200
#define DIG_VBITOUT                       0x00000400
#define DIG_OUTRATE                       0x00000800
#define DIG_INRATE                        0x00001000
#define DIG_INBITS                        0x00002000
#define DIG_OUTBITS                       0x00004000
#define DIG_EXACT                   0x00010000
#define DIG_PRO                           0x00020000
#define DIG_CONSUMER                      0x00040000
#define DIG_PASSTHROUGH                   0x00080000
#define DIG_OUTSEL                        0x00100000

    unsigned int valid;
#define VAL_CBITIN            0x00000001
#define VAL_UBITIN            0x00000002
#define VAL_CBITOUT           0x00000004
#define VAL_UBITOUT           0x00000008
#define VAL_ISTATUS           0x00000010
#define VAL_IRATE       0x00000020
#define VAL_ORATE       0x00000040
#define VAL_INBITS            0x00000080
#define VAL_OUTBITS           0x00000100
#define VAL_REQUEST           0x00000200
#define VAL_OUTSEL            0x00000400

#define VAL_OUTMASK (VAL_CBITOUT|VAL_UBITOUT|VAL_ORATE|VAL_OUTBITS|VAL_OUTSEL)

    unsigned int request, param;
#define SPD_RQ_PASSTHROUGH                      1

    unsigned char cbitin[24];
    unsigned char ubitin[24];
    unsigned char cbitout[24];
    unsigned char ubitout[24];

    unsigned int outsel;
#define OUTSEL_DIGITAL        1
#define OUTSEL_ANALOG         2
#define OUTSEL_BOTH                 (OUTSEL_DIGITAL|OUTSEL_ANALOG)

    int in_data;                /* Audio/data if autodetectable by the receiver */
#define IND_UNKNOWN                 0
#define IND_AUDIO             1
#define IND_DATA              2

    int in_locked;              /* Receiver locked */
#define LOCK_NOT_INDICATED    0
#define LOCK_UNLOCKED         1
#define LOCK_LOCKED                 2

    int in_quality;             /* Input signal quality */
#define IN_QUAL_NOT_INDICATED 0
#define IN_QUAL_POOR                1
#define IN_QUAL_GOOD                2

    int in_vbit, out_vbit;      /* V bits */
#define VBIT_NOT_INDICATED          0
#define VBIT_OFF                    1
#define VBIT_ON                           2

    unsigned int in_errors;     /* Various input errro conditions */
#define INERR_CRC                   0x0001
#define INERR_QCODE_CRC             0x0002
#define INERR_PARITY                0x0004
#define INERR_BIPHASE               0x0008

    int srate_in, srate_out;
    int bits_in, bits_out;

    int filler[32];
} oss_digital_control;

#define SNDCTL_DSP_READCTL          __SIOWR('P', 26, oss_digital_control)
#define SNDCTL_DSP_WRITECTL         __SIOWR('P', 27, oss_digital_control)

typedef struct oss_syncgroup {
    int id;
    int mode;
} oss_syncgroup;

#define SNDCTL_DSP_SYNCGROUP        __SIOWR('P', 28, oss_syncgroup)
#define SNDCTL_DSP_SYNCSTART        __SIOW ('P', 29, int)

/*
 * "cooked" mode enables software based conversions for sample rate, sample
 * format (bits) and number of channels (mono/stereo). These conversions are
 * required with some devices that support only one sample rate or just stereo
 * to let the applications to use other formats. The cooked mode is enabled by
 * default. However it's necessary to disable this mode when mmap() is used or
 * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
 * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
 * since normally this call will return erno=EINVAL.
 *
 * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
 * anything else. Otherwise the call will not have any effect.
 */
#define SNDCTL_DSP_COOKEDMODE       __SIOW ('P', 30, int)

#define SNDCTL_DSP_GETCHANNELMASK             __SIOWR('P', 64, int)
#define SNDCTL_DSP_BIND_CHANNEL               __SIOWR('P', 65, int)
#     define DSP_BIND_QUERY           0x00000000
#     define DSP_BIND_FRONT           0x00000001
#     define DSP_BIND_SURR            0x00000002
#     define DSP_BIND_CENTER_LFE      0x00000004
#     define DSP_BIND_HANDSET         0x00000008
#     define DSP_BIND_MIC             0x00000010
#     define DSP_BIND_MODEM1          0x00000020
#     define DSP_BIND_MODEM2          0x00000040
#     define DSP_BIND_I2S             0x00000080
#     define DSP_BIND_SPDIF           0x00000100

/*
 * SOUND_PCM_* calls are obsolete. Use the SNDCTL_DSP_ ones instead.
 */

#define SOUND_PCM_READ_RATE         __SIOR ('P', 2, int)
#define SOUND_PCM_READ_CHANNELS           __SIOR ('P', 6, int)
#define SOUND_PCM_READ_BITS         __SIOR ('P', 5, int)
#define SOUND_PCM_READ_FILTER       __SIOR ('P', 7, int)

/* Some alias names (obsolete) */
#define SOUND_PCM_WRITE_BITS        SNDCTL_DSP_SETFMT
#define SOUND_PCM_WRITE_RATE        SNDCTL_DSP_SPEED
#define SOUND_PCM_POST              SNDCTL_DSP_POST
#define SOUND_PCM_RESET             SNDCTL_DSP_RESET
#define SOUND_PCM_SYNC              SNDCTL_DSP_SYNC
#define SOUND_PCM_SUBDIVIDE         SNDCTL_DSP_SUBDIVIDE
#define SOUND_PCM_SETFRAGMENT       SNDCTL_DSP_SETFRAGMENT
#define SOUND_PCM_GETFMTS           SNDCTL_DSP_GETFMTS
#define SOUND_PCM_SETFMT            SNDCTL_DSP_SETFMT
#define SOUND_PCM_GETOSPACE         SNDCTL_DSP_GETOSPACE
#define SOUND_PCM_GETISPACE         SNDCTL_DSP_GETISPACE
#define SOUND_PCM_NONBLOCK          SNDCTL_DSP_NONBLOCK
#define SOUND_PCM_GETCAPS           SNDCTL_DSP_GETCAPS
#define SOUND_PCM_GETTRIGGER        SNDCTL_DSP_GETTRIGGER
#define SOUND_PCM_SETTRIGGER        SNDCTL_DSP_SETTRIGGER
#define SOUND_PCM_SETSYNCRO         SNDCTL_DSP_SETSYNCRO
#define SOUND_PCM_GETIPTR           SNDCTL_DSP_GETIPTR
#define SOUND_PCM_GETOPTR           SNDCTL_DSP_GETOPTR
#define SOUND_PCM_MAPINBUF          SNDCTL_DSP_MAPINBUF
#define SOUND_PCM_MAPOUTBUF         SNDCTL_DSP_MAPOUTBUF

/*********************************************
 * IOCTL commands for /dev/mixer
 */

/* 
 * Mixer devices
 *
 * There can be up to 20 different analog mixer channels. The
 * SOUND_MIXER_NRDEVICES gives the currently supported maximum. 
 * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
 * the devices supported by the particular mixer.
 */

#define SOUND_MIXER_NRDEVICES 28
#define SOUND_MIXER_VOLUME    0
#define SOUND_MIXER_BASS      1
#define SOUND_MIXER_TREBLE    2
#define SOUND_MIXER_SYNTH     3
#define SOUND_MIXER_PCM       4
#define SOUND_MIXER_SPEAKER   5
#define SOUND_MIXER_LINE      6
#define SOUND_MIXER_MIC       7
#define SOUND_MIXER_CD        8
#define SOUND_MIXER_IMIX      9       /*  Recording monitor  */
#define SOUND_MIXER_ALTPCM    10
#define SOUND_MIXER_RECLEV    11      /* Recording level */
#define SOUND_MIXER_IGAIN     12      /* Input gain */
#define SOUND_MIXER_OGAIN     13      /* Output gain */
/* 
 * The AD1848 codec and compatibles have three line level inputs
 * (line, aux1 and aux2). Since each card manufacturer have assigned
 * different meanings to these inputs, it's inpractical to assign
 * specific meanings (line, cd, synth etc.) to them.
 */
#define SOUND_MIXER_LINE1     14      /* Input source 1  (aux1) */
#define SOUND_MIXER_LINE2     15      /* Input source 2  (aux2) */
#define SOUND_MIXER_LINE3     16      /* Input source 3  (line) */
#define SOUND_MIXER_DIGITAL1  17      /* Digital (input) 1 */
#define SOUND_MIXER_DIGITAL2  18      /* Digital (input) 2 */
#define SOUND_MIXER_DIGITAL3  19      /* Digital (input) 3 */
#define SOUND_MIXER_PHONEIN   20      /* Phone input */
#define SOUND_MIXER_PHONEOUT  21      /* Phone output */
#define SOUND_MIXER_VIDEO     22      /* Video/TV (audio) in */
#define SOUND_MIXER_RADIO     23      /* Radio in */
#define SOUND_MIXER_MONITOR   24      /* Monitor (usually mic) volume */
#define SOUND_MIXER_DEPTH     25      /* 3D "depth"/"space" parameter */
#define SOUND_MIXER_CENTER    26      /* 3D "center" parameter */
#define SOUND_MIXER_MIDI      27      /* Alternative for "synth" */

/* Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX) */
/* Not counted to SOUND_MIXER_NRDEVICES, but use the same number space */
#define SOUND_ONOFF_MIN       28
#define SOUND_ONOFF_MAX       30

/* Note!    Number 31 cannot be used since the sign bit is reserved */
#define SOUND_MIXER_NONE      31

/*
 * The following unsupported macros are no longer functional.
 * Use SOUND_MIXER_PRIVATE# macros in future.
 */
#define SOUND_MIXER_ENHANCE   SOUND_MIXER_NONE
#define SOUND_MIXER_MUTE      SOUND_MIXER_NONE
#define SOUND_MIXER_LOUD      SOUND_MIXER_NONE


#define SOUND_DEVICE_LABELS   {"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
                         "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
                         "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
                         "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor", \
                         "Depth", "Center", "MIDI"}

#define SOUND_DEVICE_NAMES    {"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
                         "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
                         "line1", "line2", "line3", "dig1", "dig2", "dig3", \
                         "phin", "phout", "video", "radio", "monitor", \
                         "depth", "center", "midi"}

/*    Device bitmask identifiers    */

#define SOUND_MIXER_RECSRC    0xff    /* Arg contains a bit for each recording source */
#define SOUND_MIXER_DEVMASK   0xfe    /* Arg contains a bit for each supported device */
#define SOUND_MIXER_RECMASK   0xfd    /* Arg contains a bit for each supported recording source */
#define SOUND_MIXER_CAPS      0xfc
#     define SOUND_CAP_EXCL_INPUT   0x00000001      /* Only one recording source at a time */
#define SOUND_MIXER_STEREODEVS      0xfb    /* Mixer channels supporting stereo */

/* OSS/Free ONLY */
#define SOUND_MIXER_OUTSRC    0xfa      /* Arg contains a bit for each input source to output */
#define SOUND_MIXER_OUTMASK   0xf9      /* Arg contains a bit for each supported input source to output */
/* OSS/Free ONLY */

/*    Device mask bits  */

#define SOUND_MASK_VOLUME     (1 << SOUND_MIXER_VOLUME)
#define SOUND_MASK_BASS       (1 << SOUND_MIXER_BASS)
#define SOUND_MASK_TREBLE     (1 << SOUND_MIXER_TREBLE)
#define SOUND_MASK_SYNTH      (1 << SOUND_MIXER_SYNTH)
#define SOUND_MASK_PCM        (1 << SOUND_MIXER_PCM)
#define SOUND_MASK_SPEAKER    (1 << SOUND_MIXER_SPEAKER)
#define SOUND_MASK_LINE       (1 << SOUND_MIXER_LINE)
#define SOUND_MASK_MIC        (1 << SOUND_MIXER_MIC)
#define SOUND_MASK_CD         (1 << SOUND_MIXER_CD)
#define SOUND_MASK_IMIX       (1 << SOUND_MIXER_IMIX)
#define SOUND_MASK_ALTPCM     (1 << SOUND_MIXER_ALTPCM)
#define SOUND_MASK_RECLEV     (1 << SOUND_MIXER_RECLEV)
#define SOUND_MASK_IGAIN      (1 << SOUND_MIXER_IGAIN)
#define SOUND_MASK_OGAIN      (1 << SOUND_MIXER_OGAIN)
#define SOUND_MASK_LINE1      (1 << SOUND_MIXER_LINE1)
#define SOUND_MASK_LINE2      (1 << SOUND_MIXER_LINE2)
#define SOUND_MASK_LINE3      (1 << SOUND_MIXER_LINE3)
#define SOUND_MASK_DIGITAL1   (1 << SOUND_MIXER_DIGITAL1)
#define SOUND_MASK_DIGITAL2   (1 << SOUND_MIXER_DIGITAL2)
#define SOUND_MASK_DIGITAL3   (1 << SOUND_MIXER_DIGITAL3)
#define SOUND_MASK_PHONEIN    (1 << SOUND_MIXER_PHONEIN)
#define SOUND_MASK_PHONEOUT   (1 << SOUND_MIXER_PHONEOUT)
#define SOUND_MASK_RADIO      (1 << SOUND_MIXER_RADIO)
#define SOUND_MASK_VIDEO      (1 << SOUND_MIXER_VIDEO)
#define SOUND_MASK_MONITOR    (1 << SOUND_MIXER_MONITOR)
#define SOUND_MASK_DEPTH      (1 << SOUND_MIXER_DEPTH)
#define SOUND_MASK_CENTER     (1 << SOUND_MIXER_CENTER)
#define SOUND_MASK_MIDI       (1 << SOUND_MIXER_MIDI)

/* Obsolete macros */
#define SOUND_MASK_MUTE       (1 << SOUND_MIXER_MUTE)
#define SOUND_MASK_ENHANCE    (1 << SOUND_MIXER_ENHANCE)
#define SOUND_MASK_LOUD       (1 << SOUND_MIXER_LOUD)

#define MIXER_READ(dev)       __SIOR('M', dev, int)
#define SOUND_MIXER_READ_VOLUME           MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_READ_BASS       MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_READ_TREBLE           MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_READ_SYNTH            MIXER_READ(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_READ_PCM        MIXER_READ(SOUND_MIXER_PCM)
#define SOUND_MIXER_READ_SPEAKER    MIXER_READ(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_READ_LINE       MIXER_READ(SOUND_MIXER_LINE)
#define SOUND_MIXER_READ_MIC        MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_CD         MIXER_READ(SOUND_MIXER_CD)
#define SOUND_MIXER_READ_IMIX       MIXER_READ(SOUND_MIXER_IMIX)
#define SOUND_MIXER_READ_ALTPCM           MIXER_READ(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_READ_RECLEV           MIXER_READ(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_READ_IGAIN            MIXER_READ(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_READ_OGAIN            MIXER_READ(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_READ_LINE1            MIXER_READ(SOUND_MIXER_LINE1)
#define SOUND_MIXER_READ_LINE2            MIXER_READ(SOUND_MIXER_LINE2)
#define SOUND_MIXER_READ_LINE3            MIXER_READ(SOUND_MIXER_LINE3)

/* Obsolete macros */
#define SOUND_MIXER_READ_MUTE       MIXER_READ(SOUND_MIXER_MUTE)
#define SOUND_MIXER_READ_ENHANCE    MIXER_READ(SOUND_MIXER_ENHANCE)
#define SOUND_MIXER_READ_LOUD       MIXER_READ(SOUND_MIXER_LOUD)

#define SOUND_MIXER_READ_RECSRC           MIXER_READ(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_READ_DEVMASK    MIXER_READ(SOUND_MIXER_DEVMASK)
#define SOUND_MIXER_READ_RECMASK    MIXER_READ(SOUND_MIXER_RECMASK)
#define SOUND_MIXER_READ_STEREODEVS MIXER_READ(SOUND_MIXER_STEREODEVS)
#define SOUND_MIXER_READ_CAPS       MIXER_READ(SOUND_MIXER_CAPS)

#define MIXER_WRITE(dev)            __SIOWR('M', dev, int)
#define SOUND_MIXER_WRITE_VOLUME    MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_BASS            MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_TREBLE    MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_SYNTH           MIXER_WRITE(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_WRITE_PCM       MIXER_WRITE(SOUND_MIXER_PCM)
#define SOUND_MIXER_WRITE_SPEAKER   MIXER_WRITE(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_WRITE_LINE            MIXER_WRITE(SOUND_MIXER_LINE)
#define SOUND_MIXER_WRITE_MIC       MIXER_WRITE(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_CD        MIXER_WRITE(SOUND_MIXER_CD)
#define SOUND_MIXER_WRITE_IMIX            MIXER_WRITE(SOUND_MIXER_IMIX)
#define SOUND_MIXER_WRITE_ALTPCM    MIXER_WRITE(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_WRITE_RECLEV    MIXER_WRITE(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_WRITE_IGAIN           MIXER_WRITE(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_WRITE_OGAIN           MIXER_WRITE(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_WRITE_LINE1           MIXER_WRITE(SOUND_MIXER_LINE1)
#define SOUND_MIXER_WRITE_LINE2           MIXER_WRITE(SOUND_MIXER_LINE2)
#define SOUND_MIXER_WRITE_LINE3           MIXER_WRITE(SOUND_MIXER_LINE3)

/* Obsolete macros */
#define SOUND_MIXER_WRITE_MUTE            MIXER_WRITE(SOUND_MIXER_MUTE)
#define SOUND_MIXER_WRITE_ENHANCE   MIXER_WRITE(SOUND_MIXER_ENHANCE)
#define SOUND_MIXER_WRITE_LOUD            MIXER_WRITE(SOUND_MIXER_LOUD)

#define SOUND_MIXER_WRITE_RECSRC    MIXER_WRITE(SOUND_MIXER_RECSRC)

typedef struct mixer_info {
    char id[16];
    char name[32];
    int modify_counter;
    int fillers[10];
} mixer_info;

typedef struct _old_mixer_info {        /* Obsolete */
    char id[16];
    char name[32];
} _old_mixer_info;

#define SOUND_MIXER_INFO            __SIOR ('M', 101, mixer_info)
#define SOUND_OLD_MIXER_INFO        __SIOR ('M', 101, _old_mixer_info)

/*
 * A mechanism for accessing "proprietary" mixer features. This method
 * permits passing 128 bytes of arbitrary data between a mixer application
 * and the mixer driver. Interpretation of the record is defined by
 * the particular mixer driver.
 */
typedef unsigned char mixer_record[128];

#define SOUND_MIXER_ACCESS          __SIOWR('M', 102, mixer_record)

/*
 * Two ioctls for special souncard function (OSS/Free only)
 */
#define SOUND_MIXER_AGC  _SIOWR('M', 103, int)
#define SOUND_MIXER_3DSE  _SIOWR('M', 104, int)
/*
 * The SOUND_MIXER_PRIVATE# commands can be redefined by low level drivers.
 * These features can be used when accessing device specific features.
 */
#define SOUND_MIXER_PRIVATE1        __SIOWR('M', 111, int)
#define SOUND_MIXER_PRIVATE2        __SIOWR('M', 112, int)
#define SOUND_MIXER_PRIVATE3        __SIOWR('M', 113, int)
#define SOUND_MIXER_PRIVATE4        __SIOWR('M', 114, int)
#define SOUND_MIXER_PRIVATE5        __SIOWR('M', 115, int)


/*
 * SOUND_MIXER_GETLEVELS and SOUND_MIXER_SETLEVELS calls can be used
 * for querying current mixer settings from the driver and for loading
 * default volume settings _prior_ activating the mixer (loading
 * doesn't affect current state of the mixer hardware). These calls
 * are for internal use only.
 */

typedef struct mixer_vol_table {
    int num;                    /* Index to volume table */
    char name[32];
    int levels[32];
} mixer_vol_table;

#define SOUND_MIXER_GETLEVELS       __SIOWR('M', 116, mixer_vol_table)
#define SOUND_MIXER_SETLEVELS       __SIOWR('M', 117, mixer_vol_table)

/* 
 * An ioctl for identifying the driver version. It will return value
 * of the SOUND_VERSION macro used when compiling the driver.
 * This call was introduced in OSS version 3.6 and it will not work
 * with earlier versions (returns EINVAL).
 */
#define OSS_GETVERSION              __SIOR ('M', 118, int)
/*
 * Calls to set/get the recording gain for the currently active
 * recording source. These calls automatically map to the right control.
 * Note that these calls are not supported by all drivers. In this case
 * the call will return -1 with errno set to EINVAL
 *
 * The _MONGAIN work in similar way but set/get the monitoring gain for
 * the currently selected recording source.
 */
#define SOUND_MIXER_READ_RECGAIN    __SIOR ('M', 119, int)
#define SOUND_MIXER_WRITE_RECGAIN   __SIOWR('M', 119, int)
#define SOUND_MIXER_READ_MONGAIN    __SIOR ('M', 120, int)
#define SOUND_MIXER_WRITE_MONGAIN   __SIOWR('M', 120, int)

/*************************************************
 * Extended mixer interface  (OSS 4.0 and later) *
 *************************************************/
#define SYSINFO_FILL_SIZE 256

typedef struct oss_sysinfo {
    char product[32];           /* For example OSS/Free, OSS/Linux or OSS/Solaris */
    char version[32];           /* For example 4.0a */
    int versionnum;             /* See OSS_GETVERSION */
    char options[128];          /* Reserved */

    int numaudios;              /* # of audio/dsp devices */
    int openedaudio[8];         /* Bit mask telling which audio devices are busy */

    int numsynths;              /* # of availavle synth devices */
    int nummidis;               /* # of available MIDI ports */
    int numtimers;              /* # of available timer devices */
    int nummixers;              /* # of mixer devices */

    int filler[SYSINFO_FILL_SIZE];      /* For future expansion (set to -1) */
} oss_sysinfo;

typedef struct oss_mixext {
    int dev;                    /* Mixer device number */
    int ctrl;                   /* Controller number */
    int type;                   /* Entry type */
#     define MIXT_DEVROOT      0      /* Device root entry */
#     define MIXT_GROUP  1      /* Controller group */
#     define MIXT_ONOFF  2      /* OFF (0) or ON (1) */
#     define MIXT_ENUM   3      /* Enumerated (0 to maxvalue) */
#     define MIXT_MONOSLIDER   4      /* Mono slider (0 to 100) */
#     define MIXT_STEREOSLIDER 5      /* Stereo slider (dual 0 to 100) */
#     define MIXT_MESSAGE      6      /* (Readable) textual message */
#     define MIXT_MONOVU       7      /* VU meter value (mono) */
#     define MIXT_STEREOVU     8      /* VU meter value (stereo) */
#     define MIXT_MONOPEAK     9      /* VU meter peak value (mono) */
#     define MIXT_STEREOPEAK  10      /* VU meter peak value (stereo) */
#     define MIXT_RADIOGROUP  11      /* Radio button group */
#     define MIXT_MARKER      12      /* Separator between normal and extension entries */
#     define MIXT_VALUE 13      /* Decimal value entry */
#     define MIXT_HEXVALUE    14      /* Hexadecimal value entry */
#     define MIXT_MONODB      15      /* Mono atten. slider (0 to -144) */
#     define MIXT_STEREODB    16      /* Stereo atten. slider (dual 0 to -144) */
#     define MIXT_SLIDER      17      /* Slider (mono) with full integer range */
#     define MIXT_3D          18


    /* Possible value range (minvalue to maxvalue) */
    /* Note that maxvalue may also be smaller than minvalue */
    int maxvalue;
    int minvalue;

    int flags;
#     define MIXF_READABLE  0x00000001        /* Has readable value */
#     define MIXF_WRITEABLE 0x00000002        /* Has writeable value */
    char id[16];                /* Mnemonic ID (for linking with user space info) */
    int parent;                 /* Entry# of parent (group) node (-1 if root) */

    int dummy;                  /* Internal use */

    int timestamp;

    char data[64];              /* Misc data (entry type dependent) */
    unsigned int enum_mask;     /* Mask of allowed enum values */
    int control_no;             /* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
    /* (-1 means not indicated) */
    int desc;                   /* Descriptive code. For future use. */
    int filler[16];
} oss_mixext;

typedef struct oss_mixext_root {
    char id[16];
    char name[48];
} oss_mixext_root;

typedef struct oss_mixer_value {
    int dev;
    int ctrl;
    int value;
    int flags;                  /* Reserved for future use. Initialize to 0 */
    int timestamp;              /* Must be set to oss_mixext.timestamp */
    int filler[8];              /* Reserved for future use. Initialize to 0 */
} oss_mixer_value;

#define OPEN_READ PCM_ENABLE_INPUT
#define OPEN_WRITE      PCM_ENABLE_OUTPUT
#define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)

typedef struct oss_audioinfo {
    int dev;                    /* Audio device number */
    char name[64];
    int busy;                   /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
    int pid;
    int caps;                   /* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
    int iformats, oformats;
    int magic;                  /* Reserved for internal use */
    char cmd[64];               /* Command using the device */
    int card_number;
    int port_number;
    int mixer_dev;
    int real_device;            /* This is the right /dev/dsp# device to open */
    int enabled;                /* 1=enabled, 0=device not ready at this moment */
    int filler[251];
} oss_audioinfo;

#define OSS_SYSINFO                 __SIOR ('X', 1, oss_sysinfo)

#define SNDCTL_MIX_NRMIX            __SIOR ('X', 2, int)
#define SNDCTL_MIX_NREXT            __SIOWR('X', 3, int)
#define SNDCTL_MIX_EXTINFO          __SIOWR('X', 4, oss_mixext)
#define SNDCTL_MIX_READ             __SIOWR('X', 5, oss_mixer_value)
#define SNDCTL_MIX_WRITE            __SIOWR('X', 6, oss_mixer_value)

#define SNDCTL_AUDIOINFO      __SIOWR('X', 7, oss_audioinfo)

/* ioctl codes 'X', 200-255 are reserved for internal use */


/*
 * Level 2 event types for /dev/sequencer
 */

/*
 * The 4 most significant bits of byte 0 specify the class of
 * the event: 
 *
 *    0x8X = system level events,
 *    0x9X = device/port specific events, event[1] = device/port,
 *          The last 4 bits give the subtype:
 *                0x02  = Channel event (event[3] = chn).
 *                0x01  = note event (event[4] = note).
 *                (0x01 is not used alone but always with bit 0x02).
 *           event[2] = MIDI message code (0x80=note off etc.)
 *
 */

#define EV_SEQ_LOCAL          0x80
#define EV_TIMING       0x81
#define EV_CHN_COMMON         0x92
#define EV_CHN_VOICE          0x93
#define EV_SYSEX        0x94
#define EV_SYSTEM       0x95    /* MIDI system and real time messages (input only) */
/*
 * Event types 200 to 220 are reserved for application use.
 * These numbers will not be used by the driver.
 */

/*
 * Events for event type EV_CHN_VOICE
 */

#define MIDI_NOTEOFF          0x80
#define MIDI_NOTEON           0x90
#define MIDI_KEY_PRESSURE     0xA0

/*
 * Events for event type EV_CHN_COMMON
 */

#define MIDI_CTL_CHANGE       0xB0
#define MIDI_PGM_CHANGE       0xC0
#define MIDI_CHN_PRESSURE     0xD0
#define MIDI_PITCH_BEND       0xE0

#define MIDI_SYSTEM_PREFIX    0xF0

/*
 * Timer event types
 */
#define TMR_WAIT_REL          1       /* Time relative to the prev time */
#define TMR_WAIT_ABS          2       /* Absolute time since TMR_START */
#define TMR_STOP        3
#define TMR_START       4
#define TMR_CONTINUE          5
#define TMR_TEMPO       6
#define TMR_ECHO        8
#define TMR_CLOCK       9       /* MIDI clock */
#define TMR_SPP               10      /* Song position pointer */
#define TMR_TIMESIG           11      /* Time signature */

/*
 *    Local event types
 */
#define LOCL_STARTAUDIO       1
#define LOCL_STARTAUDIO2      2
#define LOCL_STARTAUDIO3      3
#define LOCL_STARTAUDIO4      4

#if (!defined(__KERNEL__) && !defined(KERNEL) && !defined(INKERNEL) && !defined(_KERNEL)) || defined(USE_SEQ_MACROS)
/*
 *    Some convenience macros to simplify programming of the
 *    /dev/sequencer interface
 *
 *    These macros define the API which should be used when possible.
 */
#define SEQ_DECLAREBUF()            SEQ_USE_EXTBUF()

void seqbuf_dump(void);         /* This function must be provided by programs */

EXTERNC int OSS_init(int seqfd, int buflen);
EXTERNC void OSS_seqbuf_dump(int fd, unsigned char *buf, int buflen);
EXTERNC void OSS_seq_advbuf(int len, int fd, unsigned char *buf,
                            int buflen);
EXTERNC void OSS_seq_needbuf(int len, int fd, unsigned char *buf,
                             int buflen);
EXTERNC void OSS_patch_caching(int dev, int chn, int patch, int fd,
                               unsigned char *buf, int buflen);
EXTERNC void OSS_drum_caching(int dev, int chn, int patch, int fd,
                              unsigned char *buf, int buflen);
EXTERNC void OSS_write_patch(int fd, unsigned char *buf, int len);
EXTERNC int OSS_write_patch2(int fd, unsigned char *buf, int len);

#define SEQ_PM_DEFINES int __foo_bar___
#ifdef OSSLIB
#  define SEQ_USE_EXTBUF() \
            EXTERNC unsigned char *_seqbuf; \
            EXTERNC int _seqbuflen;EXTERNC int _seqbufptr
#  define SEQ_DEFINEBUF(len) SEQ_USE_EXTBUF();static int _requested_seqbuflen=len
#  define _SEQ_ADVBUF(len) OSS_seq_advbuf(len, seqfd, _seqbuf, _seqbuflen)
#  define _SEQ_NEEDBUF(len) OSS_seq_needbuf(len, seqfd, _seqbuf, _seqbuflen)
#  define SEQ_DUMPBUF() OSS_seqbuf_dump(seqfd, _seqbuf, _seqbuflen)

#  define SEQ_LOAD_GMINSTR(dev, instr) \
            OSS_patch_caching(dev, -1, instr, seqfd, _seqbuf, _seqbuflen)
#  define SEQ_LOAD_GMDRUM(dev, drum) \
            OSS_drum_caching(dev, -1, drum, seqfd, _seqbuf, _seqbuflen)
#else                           /* !OSSLIB */

#  define SEQ_LOAD_GMINSTR(dev, instr)
#  define SEQ_LOAD_GMDRUM(dev, drum)

#  define SEQ_USE_EXTBUF() \
            EXTERNC unsigned char _seqbuf[]; \
            EXTERNC int _seqbuflen;EXTERNC int _seqbufptr

#ifndef USE_SIMPLE_MACROS
/* Sample seqbuf_dump() implementation:
 *
 *    SEQ_DEFINEBUF (2048);   -- Defines a buffer for 2048 bytes
 *
 *    int seqfd;        -- The file descriptor for /dev/sequencer.
 *
 *    void
 *    seqbuf_dump ()
 *    {
 *      if (_seqbufptr)
 *        if (write (seqfd, _seqbuf, _seqbufptr) == -1)
 *          {
 *          perror ("write /dev/sequencer");
 *          exit (-1);
 *          }
 *      _seqbufptr = 0;
 *    }
 */

#define SEQ_DEFINEBUF(len)          unsigned char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
#define _SEQ_NEEDBUF(len)           if ((_seqbufptr+(len)) > _seqbuflen) seqbuf_dump()
#define _SEQ_ADVBUF(len)            _seqbufptr += len
#define SEQ_DUMPBUF                 seqbuf_dump
#else
/*
 * This variation of the sequencer macros is used just to format one event
 * using fixed buffer.
 * 
 * The program using the macro library must define the following macros before
 * using this library.
 *
 * #define _seqbuf             name of the buffer (unsigned char[]) 
 * #define _SEQ_ADVBUF(len)    If the applic needs to know the exact
 *                       size of the event, this macro can be used.
 *                       Otherwise this must be defined as empty.
 * #define _seqbufptr          Define the name of index variable or 0 if
 *                       not required. 
 */
#define _SEQ_NEEDBUF(len)       /* empty */
#endif
#endif                          /* !OSSLIB */

#define SEQ_VOLUME_MODE(dev, mode)  {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
                              _seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
                              _seqbuf[_seqbufptr+2] = (dev);\
                              _seqbuf[_seqbufptr+3] = (mode);\
                              _seqbuf[_seqbufptr+4] = 0;\
                              _seqbuf[_seqbufptr+5] = 0;\
                              _seqbuf[_seqbufptr+6] = 0;\
                              _seqbuf[_seqbufptr+7] = 0;\
                              _SEQ_ADVBUF(8);}

/*
 * Midi voice messages
 */

#define _CHN_VOICE(dev, event, chn, note, parm) \
                              {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr] = EV_CHN_VOICE;\
                              _seqbuf[_seqbufptr+1] = (dev);\
                              _seqbuf[_seqbufptr+2] = (event);\
                              _seqbuf[_seqbufptr+3] = (chn);\
                              _seqbuf[_seqbufptr+4] = (note);\
                              _seqbuf[_seqbufptr+5] = (parm);\
                              _seqbuf[_seqbufptr+6] = (0);\
                              _seqbuf[_seqbufptr+7] = 0;\
                              _SEQ_ADVBUF(8);}

#define SEQ_START_NOTE(dev, chn, note, vol) \
            _CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)

#define SEQ_STOP_NOTE(dev, chn, note, vol) \
            _CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)

#define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
            _CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)

/*
 * Midi channel messages
 */

#define _CHN_COMMON(dev, event, chn, p1, p2, w14) \
                              {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr] = EV_CHN_COMMON;\
                              _seqbuf[_seqbufptr+1] = (dev);\
                              _seqbuf[_seqbufptr+2] = (event);\
                              _seqbuf[_seqbufptr+3] = (chn);\
                              _seqbuf[_seqbufptr+4] = (p1);\
                              _seqbuf[_seqbufptr+5] = (p2);\
                              *(short *)&_seqbuf[_seqbufptr+6] = (w14);\
                              _SEQ_ADVBUF(8);}
/*
 * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
 * sending any MIDI bytes but it's absolutely not possible. Trying to do
 * so _will_ cause problems with MPU401 intelligent mode).
 *
 * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be 
 * sent by calling SEQ_SYSEX() several times (there must be no other events
 * between them). First sysex fragment must have 0xf0 in the first byte
 * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
 * between these sysex start and end markers cannot be larger than 0x7f. Also
 * lengths of each fragments (except the last one) must be 6.
 *
 * Breaking the above rules may work with some MIDI ports but is likely to
 * cause fatal problems with some other devices (such as MPU401).
 */
#define SEQ_SYSEX(dev, buf, len) \
                              {int ii, ll=(len); \
                               unsigned char *bufp=buf;\
                               if (ll>6)ll=6;\
                              _SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr] = EV_SYSEX;\
                              _seqbuf[_seqbufptr+1] = (dev);\
                              for(ii=0;ii<ll;ii++)\
                                 _seqbuf[_seqbufptr+ii+2] = bufp[ii];\
                              for(ii=ll;ii<6;ii++)\
                                 _seqbuf[_seqbufptr+ii+2] = 0xff;\
                              _SEQ_ADVBUF(8);}

#define SEQ_CHN_PRESSURE(dev, chn, pressure) \
            _CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)

#define SEQ_SET_PATCH SEQ_PGM_CHANGE
#ifdef OSSLIB
#   define SEQ_PGM_CHANGE(dev, chn, patch) \
            {OSS_patch_caching(dev, chn, patch, seqfd, _seqbuf, _seqbuflen); \
             _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0);}
#else
#   define SEQ_PGM_CHANGE(dev, chn, patch) \
            _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
#endif

#define SEQ_CONTROL(dev, chn, controller, value) \
            _CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)

#define SEQ_BENDER(dev, chn, value) \
            _CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)


#define SEQ_V2_X_CONTROL(dev, voice, controller, value)     {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
                              _seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
                              _seqbuf[_seqbufptr+2] = (dev);\
                              _seqbuf[_seqbufptr+3] = (voice);\
                              _seqbuf[_seqbufptr+4] = (controller);\
                              _seqbuf[_seqbufptr+5] = ((value)&0xff);\
                              _seqbuf[_seqbufptr+6] = ((value>>8)&0xff);\
                              _seqbuf[_seqbufptr+7] = 0;\
                              _SEQ_ADVBUF(8);}
/*
 * The following 5 macros are incorrectly implemented and obsolete.
 * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
 */
#define SEQ_PITCHBEND(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
#define SEQ_BENDER_RANGE(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
#define SEQ_EXPRESSION(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
#define SEQ_MAIN_VOLUME(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
#define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)

/*
 * Timing and syncronization macros
 */

#define _TIMER_EVENT(ev, parm)            {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr+0] = EV_TIMING; \
                              _seqbuf[_seqbufptr+1] = (ev); \
                              _seqbuf[_seqbufptr+2] = 0;\
                              _seqbuf[_seqbufptr+3] = 0;\
                              *(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
                              _SEQ_ADVBUF(8);}

#define SEQ_START_TIMER()           _TIMER_EVENT(TMR_START, 0)
#define SEQ_STOP_TIMER()            _TIMER_EVENT(TMR_STOP, 0)
#define SEQ_CONTINUE_TIMER()        _TIMER_EVENT(TMR_CONTINUE, 0)
#define SEQ_WAIT_TIME(ticks)        _TIMER_EVENT(TMR_WAIT_ABS, ticks)
#define SEQ_DELTA_TIME(ticks)       _TIMER_EVENT(TMR_WAIT_REL, ticks)
#define SEQ_ECHO_BACK(key)          _TIMER_EVENT(TMR_ECHO, key)
#define SEQ_SET_TEMPO(value)        _TIMER_EVENT(TMR_TEMPO, value)
#define SEQ_SONGPOS(pos)            _TIMER_EVENT(TMR_SPP, pos)
#define SEQ_TIME_SIGNATURE(sig)           _TIMER_EVENT(TMR_TIMESIG, sig)

/*
 * Local control events
 */

#define _LOCAL_EVENT(ev, parm)            {_SEQ_NEEDBUF(8);\
                              _seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
                              _seqbuf[_seqbufptr+1] = (ev); \
                              _seqbuf[_seqbufptr+2] = 0;\
                              _seqbuf[_seqbufptr+3] = 0;\
                              *(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
                              _SEQ_ADVBUF(8);}

#define SEQ_PLAYAUDIO(devmask)            _LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
#define SEQ_PLAYAUDIO2(devmask)           _LOCAL_EVENT(LOCL_STARTAUDIO2, devmask)
#define SEQ_PLAYAUDIO3(devmask)           _LOCAL_EVENT(LOCL_STARTAUDIO3, devmask)
#define SEQ_PLAYAUDIO4(devmask)           _LOCAL_EVENT(LOCL_STARTAUDIO4, devmask)
/*
 * Events for the level 1 interface only 
 */

#define SEQ_MIDIOUT(device, byte)   {_SEQ_NEEDBUF(4);\
                              _seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
                              _seqbuf[_seqbufptr+1] = (byte);\
                              _seqbuf[_seqbufptr+2] = (device);\
                              _seqbuf[_seqbufptr+3] = 0;\
                              _SEQ_ADVBUF(4);}

/*
 * Patch loading.
 */
#ifdef OSSLIB
#   define SEQ_WRPATCH(patchx, len) \
            OSS_write_patch(seqfd, (char*)(patchx), len)
#   define SEQ_WRPATCH2(patchx, len) \
            OSS_write_patch2(seqfd, (char*)(patchx), len)
#else
#   define SEQ_WRPATCH(patchx, len) \
            {if (_seqbufptr) SEQ_DUMPBUF();\
             if (write(seqfd, (char*)(patchx), len)==-1) \
                perror("Write patch: /dev/sequencer");}
#   define SEQ_WRPATCH2(patchx, len) \
            (SEQ_DUMPBUF(), write(seqfd, (char*)(patchx), len))
#endif

#endif


#ifdef OSSLIB
extern int osslib_open(const char *path, int flags, int dummy);
extern void ossclose(int fd);
extern int osslib_write(int fd, const void *buf, int count);
extern int osslib_read(int fd, void *buf, int count);
extern int osslib_ioctl(int fd, unsigned int request, void *arg);
#else
#  define osslib_open   open
#  define osslib_close  close
#  define osslib_write  write
#  define osslib_read   read
#  define osslib_ioctl  ioctl
#endif

/*
 * ioctl calls to be used in communication with coprocessors and
 * DSP chips. ******** OBSOLETE CALLS - OSS/Free only **********
 */

typedef struct copr_buffer {
    int command;                /* Set to 0 if not used */
    int flags;
#define CPF_NONE        0x0000
#define CPF_FIRST       0x0001  /* First block */
#define CPF_LAST        0x0002  /* Last block */
    int len;
    int offs;                   /* If required by the device (0 if not used) */

    unsigned char data[4000];   /* NOTE! 4000 is not 4k */
} copr_buffer;

typedef struct copr_debug_buf {
    int command;                /* Used internally. Set to 0 */
    int parm1;
    int parm2;
    int flags;
    int len;                    /* Length of data in bytes */
} copr_debug_buf;

typedef struct copr_msg {
    int len;
    unsigned char data[4000];
} copr_msg;

#define SNDCTL_COPR_RESET     __SIO  ('C',  0)  /* OBSOLETE */
#define SNDCTL_COPR_LOAD      __SIOWR('C',  1, copr_buffer)     /* OBSOLETE */
#define SNDCTL_COPR_RDATA     __SIOWR('C',  2, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_RCODE     __SIOWR('C',  3, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_WDATA     __SIOW ('C',  4, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_WCODE     __SIOW ('C',  5, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_RUN       __SIOWR('C',  6, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_HALT      __SIOWR('C',  7, copr_debug_buf)  /* OBSOLETE */
#define SNDCTL_COPR_SENDMSG   __SIOWR('C',  8, copr_msg)        /* OBSOLETE */
#define SNDCTL_COPR_RCVMSG    __SIOR ('C',  9, copr_msg)        /* OBSOLETE */

#endif

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